Answer:
During the 3rd month the eyes, ears, nose, jaw and neck form along with the arms, legs, fingers, and toes.
Explanation:
Answer:
Sewage treatment generally involves three stages, called primary, secondary and tertiary treatment. Primary treatment consists of temporarily holding the sewage in a quiescent basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface.
Explanation:
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One type of atom
a pure substance
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